Answer
$3,500,000$
Work Step by Step
To convert a number in scientific notation to a number in standard notation, we must move the decimal point to the left or right by the exponent of $10$ in the scientific notation. If the exponent is positive, we move the decimal right. If the exponent is negative, we move the decimal left.
We are trying to convert $3.5\times10^6$ to standard notation. Since the exponent of $10$ is $+6$, we move the decimal point $6$ places to the right, giving us $3,500,000$.
